EZDV recording problem!

I am using EZDV to capture videos made by the children at the primary school where I work. The videos work fine on the computer which they were captured on, playing in windows media player and importing into premiere pro 1.5. The problem arises when the video is played on other computers both on our school network and when the children take them home. The audio plays fine but the video is either a blank screen or the first image recorded and does not progress from there. This is an extremely frustrating problem and any assistance would be greatly appreciated as the children wish to demonstrate their video making skills to their parents.